That is totally amazing, but i just wanted to ask, how do you make loading bars? If i make an animation i really need to know how it doesnt need to be anything fancy just a simple loading bar... can you help, please?

You can set fills to bitmaps, so I imported a bitmap of a lava texture.

Then, using the gradient transform tool, you can actually manipulate the size/rotation/skew of the bitmap. So I made a tween of the bitmap moving to the right and skewing in perspective.

Then, I put it into a movieclip, applied a vertical blur (to hide a seam that shows between the image tile, a large glow (to make the lava look like it's emanating color), and changed the blend mode to "add" (to make the lava look like light source).

Feel free to pause the animation when you see the lava, and you can watch it loop and move